/usr/share/pyshared/openpyxl/writer/charts.py is in python-openpyxl 1.5.6-1.
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# Copyright (c) 2010-2011 openpyxl
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# @license: http://www.opensource.org/licenses/mit-license.php
# @author: see AUTHORS file
from openpyxl.shared.xmltools import Element, SubElement, get_document_content
from openpyxl.chart import Chart, ErrorBar
class ChartWriter(object):
def __init__(self, chart):
self.chart = chart
def write(self):
""" write a chart """
root = Element('c:chartSpace',
{'xmlns:c':"http://schemas.openxmlformats.org/drawingml/2006/chart",
'xmlns:a':"http://schemas.openxmlformats.org/drawingml/2006/main",
'xmlns:r':"http://schemas.openxmlformats.org/officeDocument/2006/relationships"})
SubElement(root, 'c:lang', {'val':self.chart.lang})
self._write_chart(root)
self._write_print_settings(root)
self._write_shapes(root)
return get_document_content(root)
def _write_chart(self, root):
chart = self.chart
ch = SubElement(root, 'c:chart')
self._write_title(ch)
plot_area = SubElement(ch, 'c:plotArea')
layout = SubElement(plot_area, 'c:layout')
mlayout = SubElement(layout, 'c:manualLayout')
SubElement(mlayout, 'c:layoutTarget', {'val':'inner'})
SubElement(mlayout, 'c:xMode', {'val':'edge'})
SubElement(mlayout, 'c:yMode', {'val':'edge'})
SubElement(mlayout, 'c:x', {'val':str(chart._get_margin_left())})
SubElement(mlayout, 'c:y', {'val':str(chart._get_margin_top())})
SubElement(mlayout, 'c:w', {'val':str(chart.width)})
SubElement(mlayout, 'c:h', {'val':str(chart.height)})
if chart.type == Chart.SCATTER_CHART:
subchart = SubElement(plot_area, 'c:scatterChart')
SubElement(subchart, 'c:scatterStyle', {'val':str('lineMarker')})
else:
if chart.type == Chart.BAR_CHART:
subchart = SubElement(plot_area, 'c:barChart')
SubElement(subchart, 'c:barDir', {'val':'col'})
else:
subchart = SubElement(plot_area, 'c:lineChart')
SubElement(subchart, 'c:grouping', {'val':chart.grouping})
self._write_series(subchart)
SubElement(subchart, 'c:marker', {'val':'1'})
SubElement(subchart, 'c:axId', {'val':str(chart.x_axis.id)})
SubElement(subchart, 'c:axId', {'val':str(chart.y_axis.id)})
if chart.type == Chart.SCATTER_CHART:
self._write_axis(plot_area, chart.x_axis, 'c:valAx')
else:
self._write_axis(plot_area, chart.x_axis, 'c:catAx')
self._write_axis(plot_area, chart.y_axis, 'c:valAx')
self._write_legend(ch)
SubElement(ch, 'c:plotVisOnly', {'val':'1'})
def _write_title(self, chart):
if self.chart.title != '':
title = SubElement(chart, 'c:title')
tx = SubElement(title, 'c:tx')
rich = SubElement(tx, 'c:rich')
SubElement(rich, 'a:bodyPr')
SubElement(rich, 'a:lstStyle')
p = SubElement(rich, 'a:p')
pPr = SubElement(p, 'a:pPr')
SubElement(pPr, 'a:defRPr')
r = SubElement(p, 'a:r')
SubElement(r, 'a:rPr', {'lang':self.chart.lang})
t = SubElement(r, 'a:t').text = self.chart.title
SubElement(title, 'c:layout')
def _write_axis(self, plot_area, axis, label):
ax = SubElement(plot_area, label)
SubElement(ax, 'c:axId', {'val':str(axis.id)})
scaling = SubElement(ax, 'c:scaling')
SubElement(scaling, 'c:orientation', {'val':axis.orientation})
if label == 'c:valAx':
SubElement(scaling, 'c:max', {'val':str(axis.max)})
SubElement(scaling, 'c:min', {'val':str(axis.min)})
SubElement(ax, 'c:axPos', {'val':axis.position})
if label == 'c:valAx':
SubElement(ax, 'c:majorGridlines')
SubElement(ax, 'c:numFmt', {'formatCode':"General", 'sourceLinked':'1'})
if axis.title != '':
title = SubElement(ax, 'c:title')
tx = SubElement(title, 'c:tx')
rich = SubElement(tx, 'c:rich')
SubElement(rich, 'a:bodyPr')
SubElement(rich, 'a:lstStyle')
p = SubElement(rich, 'a:p')
pPr = SubElement(p, 'a:pPr')
SubElement(pPr, 'a:defRPr')
r = SubElement(p, 'a:r')
SubElement(r, 'a:rPr', {'lang':self.chart.lang})
t = SubElement(r, 'a:t').text = axis.title
SubElement(title, 'c:layout')
SubElement(ax, 'c:tickLblPos', {'val':axis.tick_label_position})
SubElement(ax, 'c:crossAx', {'val':str(axis.cross)})
SubElement(ax, 'c:crosses', {'val':axis.crosses})
if axis.auto:
SubElement(ax, 'c:auto', {'val':'1'})
if axis.label_align:
SubElement(ax, 'c:lblAlgn', {'val':axis.label_align})
if axis.label_offset:
SubElement(ax, 'c:lblOffset', {'val':str(axis.label_offset)})
if label == 'c:valAx':
if self.chart.type == Chart.SCATTER_CHART:
SubElement(ax, 'c:crossBetween', {'val':'midCat'})
else:
SubElement(ax, 'c:crossBetween', {'val':'between'})
SubElement(ax, 'c:majorUnit', {'val':str(axis.unit)})
def _write_series(self, subchart):
for i, serie in enumerate(self.chart._series):
ser = SubElement(subchart, 'c:ser')
SubElement(ser, 'c:idx', {'val':str(i)})
SubElement(ser, 'c:order', {'val':str(i)})
if serie.legend:
tx = SubElement(ser, 'c:tx')
self._write_serial(tx, serie.legend)
if serie.color:
sppr = SubElement(ser, 'c:spPr')
if self.chart.type == Chart.BAR_CHART:
# fill color
fillc = SubElement(sppr, 'a:solidFill')
SubElement(fillc, 'a:srgbClr', {'val':serie.color})
# edge color
ln = SubElement(sppr, 'a:ln')
fill = SubElement(ln, 'a:solidFill')
SubElement(fill, 'a:srgbClr', {'val':serie.color})
if serie.error_bar:
self._write_error_bar(ser, serie)
marker = SubElement(ser, 'c:marker')
SubElement(marker, 'c:symbol', {'val':serie.marker})
if serie.labels:
cat = SubElement(ser, 'c:cat')
self._write_serial(cat, serie.labels)
if self.chart.type == Chart.SCATTER_CHART:
if serie.xvalues:
xval = SubElement(ser, 'c:xVal')
self._write_serial(xval, serie.xvalues)
yval = SubElement(ser, 'c:yVal')
self._write_serial(yval, serie.values)
else:
val = SubElement(ser, 'c:val')
self._write_serial(val, serie.values)
def _write_serial(self, node, serie, literal=False):
cache = serie._get_cache()
if isinstance(cache[0], basestring):
typ = 'str'
else:
typ = 'num'
if not literal:
if typ == 'num':
ref = SubElement(node, 'c:numRef')
else:
ref = SubElement(node, 'c:strRef')
SubElement(ref, 'c:f').text = serie._get_ref()
if typ == 'num':
data = SubElement(ref, 'c:numCache')
else:
data = SubElement(ref, 'c:strCache')
else:
data = SubElement(node, 'c:numLit')
if typ == 'num':
SubElement(data, 'c:formatCode').text = 'General'
if literal:
values = (1,)
else:
values = cache
SubElement(data, 'c:ptCount', {'val':str(len(values))})
for j, val in enumerate(values):
point = SubElement(data, 'c:pt', {'idx':str(j)})
SubElement(point, 'c:v').text = str(val)
def _write_error_bar(self, node, serie):
flag = {ErrorBar.PLUS_MINUS:'both',
ErrorBar.PLUS:'plus',
ErrorBar.MINUS:'minus'}
eb = SubElement(node, 'c:errBars')
SubElement(eb, 'c:errBarType', {'val':flag[serie.error_bar.type]})
SubElement(eb, 'c:errValType', {'val':'cust'})
plus = SubElement(eb, 'c:plus')
self._write_serial(plus, serie.error_bar.values,
literal=(serie.error_bar.type == ErrorBar.MINUS))
minus = SubElement(eb, 'c:minus')
self._write_serial(minus, serie.error_bar.values,
literal=(serie.error_bar.type == ErrorBar.PLUS))
def _write_legend(self, chart):
legend = SubElement(chart, 'c:legend')
SubElement(legend, 'c:legendPos', {'val':self.chart.legend.position})
SubElement(legend, 'c:layout')
def _write_print_settings(self, root):
settings = SubElement(root, 'c:printSettings')
SubElement(settings, 'c:headerFooter')
margins = dict([(k, str(v)) for (k, v) in self.chart.print_margins.iteritems()])
SubElement(settings, 'c:pageMargins', margins)
SubElement(settings, 'c:pageSetup')
def _write_shapes(self, root):
if self.chart._shapes:
SubElement(root, 'c:userShapes', {'r:id':'rId1'})
def write_rels(self, drawing_id):
root = Element('Relationships', {'xmlns' : 'http://schemas.openxmlformats.org/package/2006/relationships'})
attrs = {'Id' : 'rId1',
'Type' : 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/chartUserShapes',
'Target' : '../drawings/drawing%s.xml' % drawing_id }
SubElement(root, 'Relationship', attrs)
return get_document_content(root)
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